Palladium-catalyzed ring-closing reaction of enynols with aminals via methylene transfer and C–N bond activation

Copper-catalyzed cyanation of aryl iodides with α-cyanoacetates via C-CN bond activation.

A Cu(I)-catalyzed cyanation reaction of aryl iodides with α-cyanoacetates is reported herein, which uses α-cyanoacetates as the nontoxic and easy-handling CN source through copper-mediated C-CN bond cleavage. This reaction enables access to aryl nitriles with an array of functional groups on the aromatic ring in good to excellent yields.

Synthesis of Dibenzofurans via a Palladium Catalyzed Oxidative Ring Closure Reaction

RhI-catalyzed C-C bond activation: seven-membered ring synthesis by a [6+1] carbonylative ring-expansion reaction of allenylcyclobutanes.

Palladium-Catalyzed, Enantioselective Heine Reaction

Aziridines are important synthetic intermediates for the generation of nitrogen-containing molecules. N-Acylaziridines undergo rearrangement by ring expansion to produce oxazolines, a process known as the Heine reaction. The first catalytic, enantioselective Heine reaction is reported for meso-N-acylaziridines where a palladium(II)-diphosphine complex is employed. The highly enantioenriched oxa...

A tandem Mannich addition–palladium catalyzed ring-closing route toward 4-substituted-3(2H)-furanones

A facile route towards highly functionalized 3(2H)-furanones via a sequential Mannich addition-palladium catalyzed ring closing has been elaborated. The reaction of 4-chloroacetoacetate esters with imines derived from aliphatic and aromatic aldehydes under palladium catalysis afforded 4-substituted furanones in good to excellent yields. 4-Hydrazino-3(2H)-furanones could also be synthesized from...